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12.12.12. concert featuring Paul McCartney, Bruce Springsteen, the Who and the Rolling Stones was accessible to nearly 2 billion people worldwide via TV, internet and radio

Nearly 20 million people in the U.S. tuned in to watch Bruce Springsteen, The Rolling Stones, Paul McCartney and other music legends at the 12.12.12 concert to benefit victims of Hurricane Sandy on Wednesday, according to Nielsen.

All told, the concert — which was held at New York's Madison Square Garden and aired on various networks, including ION, AMC, IFC and VH1 Classic — drew 19.3 million total television viewers in the U.S. for at least a portion of the show, though the concert was accessible to nearly 2 billion people worldwide via TV, the internet and radio.